Take an appropriate amount of sun-dried corn husk, soak it in water for 30 minutes, and then put it into a casserole dish to be decocted on high heat; if it is fresh corn husk, it needs to be cleaned and put directly into a casserole dish to be decocted on high heat. Whether it is sun-dried cornhusk or fresh, the decoction time should be short. Cornhusk is a traditional Chinese medicine, for the graminaceous plant corn stigma and stigma, to soft, shiny is better, fresh or sun-dried raw. This product is sweet, light and osmotic, can diuretic and seepage of dampness (promote the operation of water to dispel dampness), treatment of edema, urinary incontinence (urine is not smooth) and so on. In addition, this product can also promote dampness and eliminate yellowness, and is used to treat damp-heat yang yellowness or cold-damp yin yellowness. The adverse reactions of Cornus sativus are not clear, note that it is forbidden for those who are allergic to this product, and should be used with caution for those with allergies. If you need to use this product, you should be under the guidance of a physician to identify the evidence, do not blindly use your own medication to avoid the risk of occurrence.